Investment Calculator
Investment growth projection
Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.
Future value—
How to Use
- Enter your details into the fields above.
- Click the calculate button to get your result instantly.
- Use the clear button to start a new calculation.
Example
- $10,000 start, $500/month, 7% for 20 years → ≈ $300,850.72 future value
- $10k start + $1,000/mo, 7%, 15 years → Future value ≈ $345,451.76
Formula
Future value = principal × (1 + r)n + monthly × ((1 + r)n − 1) ÷ r, where r = annual return ÷ 12 and n = years × 12. Contributions are added at the end of each month and the return is assumed constant — real markets vary from year to year.
About Investment Calculator
Investment growth projection. This free online tool gives you fast, accurate results without registration or downloads.
Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.
Frequently Asked Questions
Is the Investment Calculator free to use? +
Yes, the Investment Calculator is completely free with no registration, login, or download required.
Is my financial data private? +
Yes. All calculations happen locally in your browser. Your numbers are never uploaded or stored on our servers.
Can I use the Investment Calculator on mobile? +
Yes, it works on any device — phone, tablet, or desktop — with instant results.